WebMethodAttribute Constructor (Boolean, TransactionOption)
Initializes a new instance of the WebMethodAttribute class.
Assembly: System.Web.Services (in System.Web.Services.dll)
A web service call can only be the root of a transaction, due to the stateless nature of the HTTP protocol. This means that the following two settings are equivalent, with each call creating a new transaction:
[WebMethod(TransactionOption = TransactionOption.Required)] [WebMethod(TransactionOption = TransactionOption.RequiresNew)]
It also means that all the following settings are equivalent; meaning no transaction support:
[WebMethod] // TransactionOption.Disabled is the default [WebMethod(TransactionOption = TransactionOption.Disabled)] [WebMethod(TransactionOption = Transaction.NotSupported)] [WebMethod(TransactionOption = Transaction.Supported)]
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.